This paper establishes a compact and practical model for a water-wall system comprising supercritical once-through boilers, which can be used for automatic control or simple analysis of the entire boiler-turbine system. Input and output variables of the water-wall system are defined, and balance equations are applied using a lumped parameter method. For practical purposes, the dynamic equations are developed with respect to pressure and temperature instead of density and internal energy. A comparison with results obtained using APESS, a practical thermal power plant simulator developed by Doosan Heavy Industries and Construction, is presented with respect to steady state and transient responses.

Patrick Benedict Usoro, "Modeling and Sumulation of a Drum Boiler-Turbine Power Plant under Emergency State Control", M.S. thesis, Dept. Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, United States of America, 1977.

20.

W. Shinohara and D.E. Koditschek, "A Simplified Model of a Supercritical Power Plant", University of Michigan, Control group reports, CGR-95-08, 1995.